Register or Log In To remove these advertisements. |
|
|
|
Thread Tools | Display Modes |
04-14-2017, 01:47 PM | #1 |
Registered User
Join Date: Dec 2014
Location: portland oregon
Posts: 292
|
need some advise or suggestions on my small block build
so I picked up a low mileage zz3 motor carb to pan, plans are to build this up allittle for my 61 chev longbed, I plan to keep the sm420 4spd trans, rear end is 390 gears, but will be swapped out to a 308 geared 12bolt...
its not a drag truck and not a daily driver,...more of a weekend warrior that occasionally will see some hard pulles from time to time id like to get close to 400 hp if possible with a nice lumpy exhaust sound im ditching the l98 aluminum heads are on it I will be using a set of 64cc pro comp 190cc heads with 202 and 106 valves with a set of .028 head gaskets to keep the cr close to 9.8-1 or so.. I was planning on getting an air gap performer intake already have a holley 670 that I plan to use I was looking at the lt4 hot cams but really not sure if that's what im looking for... so im basically at a stall point because of cam choice,..i need to make a decision on a cam before I send the heads to the machine shop any help is appreciated
__________________
1961 c10 longbed - gone 1964 c10 swb |
04-14-2017, 02:23 PM | #2 | ||
"I ain't nobody, dork."
Join Date: Sep 2007
Location: Whidbey Island, Washington
Posts: 8,921
|
Re: need some advise or suggestions on my small block build
That old 420 with granny low will sap a lot of your power as it won't be up to any kind of speed shifting. It's your basic old school truck transmission.
"Lumpy" sound can mean a loss of power depending on the cam you choose. You can make 350hp with a 350 extremely easy. A true 350hp engine will have a good seat of the pants feel as you accelerate.
__________________
'cuz chicks dig scars... My 1972 GMC 1500 Super Custom (Creeping Death) "long term" build thread. The Rebuild of Creeping Death after the wreck Quote:
Quote:
|
||
04-14-2017, 02:30 PM | #3 |
Registered User
Join Date: Dec 2014
Location: portland oregon
Posts: 292
|
Re: need some advise or suggestions on my small block build
im not looking for the thumper cam lumpy sound...just something with a healthy sound...as far as the 420...ya it has been a bear as it is now with the 390 gears...i am thinking the 308 gears will help with that...i dont mind the slow shifting...its not a track truck....but who knows...maybe years down the line it will get a better trans...just not now
__________________
1961 c10 longbed - gone 1964 c10 swb |
04-14-2017, 02:31 PM | #4 |
Post Whore
Join Date: May 2015
Location: Alabama
Posts: 14,583
|
Re: need some advise or suggestions on my small block build
A couple of different ones we ran back in our smallblock days were a .488/.288 and a .500/.300.. we ran these on what we called our junkyard motors..both sound really good..and made good hp gains with headers and intake..if you just want a barely there cam sound you probably don't want one as big as these
|
04-14-2017, 02:36 PM | #5 |
Registered User
Join Date: Dec 2014
Location: portland oregon
Posts: 292
|
Re: need some advise or suggestions on my small block build
oh ya the zz3 is a roller so ill be looking for a roller cam
__________________
1961 c10 longbed - gone 1964 c10 swb |
04-14-2017, 11:14 PM | #6 |
60-66 Nut
Join Date: Mar 2007
Location: Coeur d'Alene, Idaho
Posts: 23,246
|
Re: need some advise or suggestions on my small block build
I would suggest either the GM cam used in the ZZ6 engine or one with similar specs from Comp or Lunati. The ZZ6 is supposed to be a tad over 400 hp.
__________________
Power Steering Box Adapter Plates For Sale HERE Power Brake Booster Adapter Brackets For Sale '63-'66 HERE and '67-'72 HERE and '60-'62 HERE and "60-'62 with clutch HERE Rear Disc Brake Brackets For Sale. Impala SS calipers HERE Camaro Calipers HERE D52 Calipers HERE 6 Lug HERE Hydroboost Mounting Plates HERE |
Bookmarks |
|
|