03-08-2017, 01:39 PM | #1 |
Senior Member
Join Date: Mar 2015
Location: Arizona from Overland Park Kansas
Posts: 3,968
|
292 Pistons
I'm sending my 292 to the machine shop later this week and started looking for new pistons and there are 5 different stock replacement options on Summit alone.
Any opinions/suggestions on the following? Any other pistons that are better? I want to run 87 so that is why I am looking at stock pistons. Thanks in advance. https://www.summitracing.com/parts/u...make/chevrolet https://www.summitracing.com/parts/s...make/chevrolet https://www.summitracing.com/parts/u...make/chevrolet https://www.summitracing.com/parts/u...make/chevrolet https://www.summitracing.com/parts/u...make/chevrolet
__________________
Current projects: 1966 Chevy Custom PS PB A/C BBW 283 v8 3 speed OD 1966 GMC Long Step 1966 GMC 3/4 ton Custom PS PB Sport trim 351 v6 1966 GMC 3/4 ton 4x4 Custom PB 305 v6 np435 1960 GMC Custom 1968 GMC 3/4 ton 4x4 Short Bed 1962 K20 Tow truck 1961 GMC Extended Suburban Panel and a few more |
03-08-2017, 10:09 PM | #2 | |
Post Whore
Join Date: Mar 2013
Location: Southern Oregon
Posts: 10,384
|
Re: 292 Pistons
Quote:
I'd just go with these.
__________________
1966 Chevy C10 "Project Two Tone" http://67-72chevytrucks.com/vboard/s...d.php?t=596643 1964 GMC "Crustine" semi-build:http://67-72chevytrucks.com/vboard/s...d.php?t=665056 My youtube channel. Username "Military Chevy": https://www.youtube.com/channel/UC_h...fzpcUXyK_5-uiw |
|
03-08-2017, 11:53 PM | #3 | |
Senior Member
Join Date: Mar 2015
Location: Arizona from Overland Park Kansas
Posts: 3,968
|
Re: 292 Pistons
Quote:
Yes I was just looking at .030 over because that is a common over bore. I'm going to wait for the machinist to tell me what size is needed. I saw the different compression distances and dish sizes and that is why I wanted suggestions. Any reasons for those pistons over the other? Just wondering. I am building this for my 4x4 so I want to keep the low end torque. How much would 1.84 or 1.94 intake and 1.6 exhaust valves help? What about lump ports? I plan on going with a 4 barrel intake.
__________________
Current projects: 1966 Chevy Custom PS PB A/C BBW 283 v8 3 speed OD 1966 GMC Long Step 1966 GMC 3/4 ton Custom PS PB Sport trim 351 v6 1966 GMC 3/4 ton 4x4 Custom PB 305 v6 np435 1960 GMC Custom 1968 GMC 3/4 ton 4x4 Short Bed 1962 K20 Tow truck 1961 GMC Extended Suburban Panel and a few more |
|
03-09-2017, 03:19 PM | #4 | |
Post Whore
Join Date: Mar 2013
Location: Southern Oregon
Posts: 10,384
|
Re: 292 Pistons
Quote:
With stock compression and a stock cam bigger valves with lump ports won't do a whole lot. 1.84's with lump ports would help for sure, but adding some lift would be the best thing you could do. Here would be a good cam: http://www.compcams.com/Company/CC/c...x?csid=58&sb=2 This is a 250 cam so you'd have to have it custom ground on a 292 cam. 4 barrel intake with headers would help to. You'll get better mid range with them. Really the best thing you could do is bump the compression up for more power, then you would have the low end still. 5-8 pounds of boost would really do it.
__________________
1966 Chevy C10 "Project Two Tone" http://67-72chevytrucks.com/vboard/s...d.php?t=596643 1964 GMC "Crustine" semi-build:http://67-72chevytrucks.com/vboard/s...d.php?t=665056 My youtube channel. Username "Military Chevy": https://www.youtube.com/channel/UC_h...fzpcUXyK_5-uiw |
|
03-09-2017, 06:41 PM | #5 |
Registered User
Join Date: Jul 2010
Location: MD
Posts: 1,937
|
Re: 292 Pistons
The #1437 would be my choice as well.
How would one deal with different fuel pump eccentric location using that 250 cam? Electric?
__________________
1969 c-10 Step Side Long Bed. I-6 250cid = = 1969 Pontiac GTO hard top. 400, 4-speed. |
03-09-2017, 07:21 PM | #6 | |
Senior Member
Join Date: Mar 2015
Location: Arizona from Overland Park Kansas
Posts: 3,968
|
Re: 292 Pistons
Quote:
Can I get .040 over propane pistons? So I would have to run 91? So if that cam, 1.84 and 1.6 valves, lump ports, 4 barrel and header will make a nice engine then I will do that. Just not sure on pistons.
__________________
Current projects: 1966 Chevy Custom PS PB A/C BBW 283 v8 3 speed OD 1966 GMC Long Step 1966 GMC 3/4 ton Custom PS PB Sport trim 351 v6 1966 GMC 3/4 ton 4x4 Custom PB 305 v6 np435 1960 GMC Custom 1968 GMC 3/4 ton 4x4 Short Bed 1962 K20 Tow truck 1961 GMC Extended Suburban Panel and a few more |
|
03-09-2017, 09:48 PM | #7 |
Post Whore
Join Date: Mar 2013
Location: Southern Oregon
Posts: 10,384
|
Re: 292 Pistons
You can't use a 250 cam in a 292, that eccentric will hit against something and for the life of me I can't remember, OR it was the fact that you Can, but you won't be able to run a cam driven pump.
__________________
1966 Chevy C10 "Project Two Tone" http://67-72chevytrucks.com/vboard/s...d.php?t=596643 1964 GMC "Crustine" semi-build:http://67-72chevytrucks.com/vboard/s...d.php?t=665056 My youtube channel. Username "Military Chevy": https://www.youtube.com/channel/UC_h...fzpcUXyK_5-uiw |
03-09-2017, 10:14 PM | #8 |
Registered User
Join Date: Jul 2010
Location: MD
Posts: 1,937
|
You are probably thinking of flat spots on the 292 cam for conn rod clearance. That would be chief concern using a 250 cam.
__________________
1969 c-10 Step Side Long Bed. I-6 250cid = = 1969 Pontiac GTO hard top. 400, 4-speed. |
03-09-2017, 10:16 PM | #9 | |
Post Whore
Join Date: Mar 2013
Location: Southern Oregon
Posts: 10,384
|
Re: 292 Pistons
Quote:
Another issue is the sealed power pistons are only available in a .030 over bore. If you can't find pistons you can shave the block and head for more compression. I shaved the head on my 292 .030. Block you'd have to be more conservative with. Any particular reason why you have to go .040 over???
__________________
1966 Chevy C10 "Project Two Tone" http://67-72chevytrucks.com/vboard/s...d.php?t=596643 1964 GMC "Crustine" semi-build:http://67-72chevytrucks.com/vboard/s...d.php?t=665056 My youtube channel. Username "Military Chevy": https://www.youtube.com/channel/UC_h...fzpcUXyK_5-uiw |
|
03-09-2017, 10:17 PM | #10 |
Post Whore
Join Date: Mar 2013
Location: Southern Oregon
Posts: 10,384
|
Re: 292 Pistons
That and I thought there was a reason you couldn't as well due to the position of the eccentric. I'll have to read up on that again.
__________________
1966 Chevy C10 "Project Two Tone" http://67-72chevytrucks.com/vboard/s...d.php?t=596643 1964 GMC "Crustine" semi-build:http://67-72chevytrucks.com/vboard/s...d.php?t=665056 My youtube channel. Username "Military Chevy": https://www.youtube.com/channel/UC_h...fzpcUXyK_5-uiw |
03-09-2017, 11:37 PM | #11 | |
Senior Member
Join Date: Mar 2015
Location: Arizona from Overland Park Kansas
Posts: 3,968
|
Re: 292 Pistons
Quote:
I'm going over there tomorrow so I will ask him if I can get away with .030 over. It has a good cylinder ridge at the top so that is why he was thinking .040 to be safe.
__________________
Current projects: 1966 Chevy Custom PS PB A/C BBW 283 v8 3 speed OD 1966 GMC Long Step 1966 GMC 3/4 ton Custom PS PB Sport trim 351 v6 1966 GMC 3/4 ton 4x4 Custom PB 305 v6 np435 1960 GMC Custom 1968 GMC 3/4 ton 4x4 Short Bed 1962 K20 Tow truck 1961 GMC Extended Suburban Panel and a few more |
|
03-10-2017, 01:41 AM | #12 | |
Post Whore
Join Date: Mar 2013
Location: Southern Oregon
Posts: 10,384
|
Re: 292 Pistons
Quote:
Sure ya can! They are a nice set to, I got them for my 292. You can use them as a mirror to comb yer hair in! Ah ok, Might just have to go with stockers then. Only two sizes I know of for stock pistons are .030 and .060.
__________________
1966 Chevy C10 "Project Two Tone" http://67-72chevytrucks.com/vboard/s...d.php?t=596643 1964 GMC "Crustine" semi-build:http://67-72chevytrucks.com/vboard/s...d.php?t=665056 My youtube channel. Username "Military Chevy": https://www.youtube.com/channel/UC_h...fzpcUXyK_5-uiw |
|
03-10-2017, 12:00 PM | #13 |
Registered User
Join Date: Jun 2003
Location: Mtn. Home, Idaho
Posts: 906
|
Re: 292 Pistons
Sealed power pistons are available in .040 over I ended up with a set Im not going to use, decided to bite the bullet and get the Ross pistons from Tom
|
03-10-2017, 01:55 PM | #14 |
Senior Member
Join Date: Mar 2015
Location: Arizona from Overland Park Kansas
Posts: 3,968
|
Re: 292 Pistons
The propane or stock style pistons?
__________________
Current projects: 1966 Chevy Custom PS PB A/C BBW 283 v8 3 speed OD 1966 GMC Long Step 1966 GMC 3/4 ton Custom PS PB Sport trim 351 v6 1966 GMC 3/4 ton 4x4 Custom PB 305 v6 np435 1960 GMC Custom 1968 GMC 3/4 ton 4x4 Short Bed 1962 K20 Tow truck 1961 GMC Extended Suburban Panel and a few more |
03-10-2017, 02:46 PM | #15 |
Senior Member
Join Date: Mar 2015
Location: Arizona from Overland Park Kansas
Posts: 3,968
|
Re: 292 Pistons
Which lump ports would you suggest?
http://www.ebay.com/itm/HI-FLOW-inta...KVwYcw&vxp=mtr http://www.ebay.com/itm/T6G1-230-250...hRZ9on&vxp=mtr http://www.ebay.com/itm/T6G2-Max-Flo...RRXv3F&vxp=mtr
__________________
Current projects: 1966 Chevy Custom PS PB A/C BBW 283 v8 3 speed OD 1966 GMC Long Step 1966 GMC 3/4 ton Custom PS PB Sport trim 351 v6 1966 GMC 3/4 ton 4x4 Custom PB 305 v6 np435 1960 GMC Custom 1968 GMC 3/4 ton 4x4 Short Bed 1962 K20 Tow truck 1961 GMC Extended Suburban Panel and a few more Last edited by Classic v6 GMC's; 03-11-2017 at 12:16 AM. |
03-11-2017, 12:25 AM | #16 |
Senior Member
Join Date: Mar 2015
Location: Arizona from Overland Park Kansas
Posts: 3,968
|
Re: 292 Pistons
Well .040 over was confirmed by the machine shop so I guess I will go with these https://www.summitracing.com/parts/uem-1437-040
I guess I can always put a turbo on it.
__________________
Current projects: 1966 Chevy Custom PS PB A/C BBW 283 v8 3 speed OD 1966 GMC Long Step 1966 GMC 3/4 ton Custom PS PB Sport trim 351 v6 1966 GMC 3/4 ton 4x4 Custom PB 305 v6 np435 1960 GMC Custom 1968 GMC 3/4 ton 4x4 Short Bed 1962 K20 Tow truck 1961 GMC Extended Suburban Panel and a few more |
03-11-2017, 01:48 AM | #17 | ||
Post Whore
Join Date: Mar 2013
Location: Southern Oregon
Posts: 10,384
|
Re: 292 Pistons
Quote:
Quote:
__________________
1966 Chevy C10 "Project Two Tone" http://67-72chevytrucks.com/vboard/s...d.php?t=596643 1964 GMC "Crustine" semi-build:http://67-72chevytrucks.com/vboard/s...d.php?t=665056 My youtube channel. Username "Military Chevy": https://www.youtube.com/channel/UC_h...fzpcUXyK_5-uiw |
||
03-16-2017, 10:56 PM | #18 |
Senior Member
Join Date: Mar 2015
Location: Arizona from Overland Park Kansas
Posts: 3,968
|
Re: 292 Pistons
Well I have ordered most of the parts except for the cam and lifters.
Pics of what arrived today.
__________________
Current projects: 1966 Chevy Custom PS PB A/C BBW 283 v8 3 speed OD 1966 GMC Long Step 1966 GMC 3/4 ton Custom PS PB Sport trim 351 v6 1966 GMC 3/4 ton 4x4 Custom PB 305 v6 np435 1960 GMC Custom 1968 GMC 3/4 ton 4x4 Short Bed 1962 K20 Tow truck 1961 GMC Extended Suburban Panel and a few more |
03-17-2017, 12:45 AM | #19 |
Post Whore
Join Date: Mar 2013
Location: Southern Oregon
Posts: 10,384
|
Re: 292 Pistons
Cool!
__________________
1966 Chevy C10 "Project Two Tone" http://67-72chevytrucks.com/vboard/s...d.php?t=596643 1964 GMC "Crustine" semi-build:http://67-72chevytrucks.com/vboard/s...d.php?t=665056 My youtube channel. Username "Military Chevy": https://www.youtube.com/channel/UC_h...fzpcUXyK_5-uiw |
03-22-2017, 08:11 PM | #20 |
Senior Member
Join Date: Mar 2015
Location: Arizona from Overland Park Kansas
Posts: 3,968
|
Re: 292 Pistons
Thanks
Today I got the call from the machine shop and he said the head and block were ready for pick up!!
__________________
Current projects: 1966 Chevy Custom PS PB A/C BBW 283 v8 3 speed OD 1966 GMC Long Step 1966 GMC 3/4 ton Custom PS PB Sport trim 351 v6 1966 GMC 3/4 ton 4x4 Custom PB 305 v6 np435 1960 GMC Custom 1968 GMC 3/4 ton 4x4 Short Bed 1962 K20 Tow truck 1961 GMC Extended Suburban Panel and a few more |
03-22-2017, 08:16 PM | #21 |
Senior Member
Join Date: Mar 2015
Location: Arizona from Overland Park Kansas
Posts: 3,968
|
Re: 292 Pistons
Pics
Some Stainless Glasspack mufflers also arrived yesterday.
__________________
Current projects: 1966 Chevy Custom PS PB A/C BBW 283 v8 3 speed OD 1966 GMC Long Step 1966 GMC 3/4 ton Custom PS PB Sport trim 351 v6 1966 GMC 3/4 ton 4x4 Custom PB 305 v6 np435 1960 GMC Custom 1968 GMC 3/4 ton 4x4 Short Bed 1962 K20 Tow truck 1961 GMC Extended Suburban Panel and a few more |
03-22-2017, 09:02 PM | #22 |
Post Whore
Join Date: Mar 2013
Location: Southern Oregon
Posts: 10,384
|
Re: 292 Pistons
This is gonna be sweet! Hope to see some footage soon!
__________________
1966 Chevy C10 "Project Two Tone" http://67-72chevytrucks.com/vboard/s...d.php?t=596643 1964 GMC "Crustine" semi-build:http://67-72chevytrucks.com/vboard/s...d.php?t=665056 My youtube channel. Username "Military Chevy": https://www.youtube.com/channel/UC_h...fzpcUXyK_5-uiw |
03-22-2017, 10:13 PM | #23 |
Senior Member
Join Date: Mar 2015
Location: Arizona from Overland Park Kansas
Posts: 3,968
|
Re: 292 Pistons
I hope so. I will get a video when I get it running good.
I'm watching for a video of yours running.
__________________
Current projects: 1966 Chevy Custom PS PB A/C BBW 283 v8 3 speed OD 1966 GMC Long Step 1966 GMC 3/4 ton Custom PS PB Sport trim 351 v6 1966 GMC 3/4 ton 4x4 Custom PB 305 v6 np435 1960 GMC Custom 1968 GMC 3/4 ton 4x4 Short Bed 1962 K20 Tow truck 1961 GMC Extended Suburban Panel and a few more |
03-23-2017, 10:32 PM | #24 |
Senior Member
Join Date: Mar 2015
Location: Arizona from Overland Park Kansas
Posts: 3,968
|
Re: 292 Pistons
The High torque cam and other parts arrived today so I now have most everything to assemble the engine.
Only things left now is to decide on the distributor, plug wires and harmonic balancer.
__________________
Current projects: 1966 Chevy Custom PS PB A/C BBW 283 v8 3 speed OD 1966 GMC Long Step 1966 GMC 3/4 ton Custom PS PB Sport trim 351 v6 1966 GMC 3/4 ton 4x4 Custom PB 305 v6 np435 1960 GMC Custom 1968 GMC 3/4 ton 4x4 Short Bed 1962 K20 Tow truck 1961 GMC Extended Suburban Panel and a few more Last edited by Classic v6 GMC's; 03-23-2017 at 10:41 PM. |
03-24-2017, 01:04 AM | #25 |
Post Whore
Join Date: Mar 2013
Location: Southern Oregon
Posts: 10,384
|
Re: 292 Pistons
For the harmonic balancer I went with this:
https://www.summitracing.com/parts/r...make/chevrolet For the distributor I went with this: https://www.summitracing.com/parts/d...make/chevrolet The DUI is expensive....but made here in America. Here's an alternative on Ebay(It comes with wires): http://www.ebay.com/itm/CHEVY-Inline...RXtR~4&vxp=mtr Or you could just get a set of Napa Premium HEI wires for a 70's 292. They are a nice set and are 8 mm.
__________________
1966 Chevy C10 "Project Two Tone" http://67-72chevytrucks.com/vboard/s...d.php?t=596643 1964 GMC "Crustine" semi-build:http://67-72chevytrucks.com/vboard/s...d.php?t=665056 My youtube channel. Username "Military Chevy": https://www.youtube.com/channel/UC_h...fzpcUXyK_5-uiw |
Bookmarks |
|
|