Originally Posted by Super73 (Post 5140112)

Randy,

Numbers from the 60's and 70's were rated differently than todays motors.
The L88 and old school LS7 were more or less all out factory race motors. Look at todays little C6 ZO6 motor that is 427ci making every bit of 505hp from the factory. Smooth idle, runs vacum brakes, weighs less.. With a set of headers and a cam swap, they have been known to make over 600rwhp on pump gas.

Tony Mamo from AFR recently made 730+hp on an engine dyno with a 454ci LS motor. This was a 91 octane drinking hyd roller motor.

I mean really, things could be argueed for days on this.


I still haven't seen a rough cost for an NA high 11/low 12 second big block in a 36-3800lb truck.

4-5 years ago I remember driving around my buddies big block 69 truck wearing aftermarket heads, decent sized cam with 11-1 compression, converter, gear and tire. I was only running 12.30's in my truck then. He gatted me by 2-3 cars do to my lack of traction, went by him before the 1/8 and strapped close to 5 cars on him. Similar results with a second pass. My guess is it was a high 12 second truck at best.

Now I know DJ's old motor would have drove around me.. But what would that motor take to replicate in todays market?

Originally Posted by redsled87 (Post 5140710)

I'll have around $4700 in my 496. I'm hoping to run low 12's with it. Although, I'm going to have to baby it this season until, I upgrade the rear to a 9".

Originally Posted by Bad70sbchevy (Post 5138185)

The reason they run rat motors in Pro Stock is because the motors have to be NA, thus a need for bigger cubic inches to make power and I'm pretty sure they don't run turbo 4 cylinder motors in NHRA Pro Stock last time I checked but I can be wrong. You can make a lot more power with a turbo big block than a 4 cylinder, but trying to hook up all that power is another story...:lol:

Originally Posted by Super73 (Post 5140781)

Thank you for the honest example.

You can get an ls2 with trans and harness, put headers on it, put a cam in it, add injectors and get it tuned. For about the same amount.
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Originally Posted by Bad70sbchevy (Post 5131943)

Usually when they don't list the price, it costs too much. :lol:

Originally Posted by Super73 (Post 5140781)

Thank you for the honest example.

You can get an ls2 with trans and harness, put headers on it, put a cam in it, add injectors and get it tuned. For about the same amount.
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Originally Posted by Super73 (Post 5154270)

I would hope a 496ci motor would run as good as my little 347ci motor did on a 100 shot, it has 150ci on it. Now as my cubic inches get closer to that 496 mark (418ci) I would suspect I would need less bottle.

Again, I am not saying you can't make big power on the BBC platform. With any NA motor, if you have comprable heads for the ci (flow enough for the ci), the right cam and combo, a bigger cube motor should make more power, period. I just see too many bad big block combos to be an advocate of the big block craze. I'm not drinking the cool aide, but then again a lot of you big block guys aren't drinking the LS cool aide.. To each his/her own. That's what makes this sport fun!!

Originally Posted by Super73 (Post 5154673)

If I put a big block in it, it wouldn't be light weight anymore :) at some point I will change the combo, go with a solid roller in hopes to go 9's. And please correct me if I am wrong, and I do respect his truck, but I believe dj never went 9's NA with his big tired big block truck with less weight than me.
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Originally Posted by Super73 (Post 5154673)

If I put a big block in it, it wouldn't be light weight anymore :) at some point I will change the combo, go with a solid roller in hopes to go 9's. And please correct me if I am wrong, and I do respect his truck, but I believe dj never went 9's NA with his big tired big block truck with less weight than me.
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Originally Posted by djracer (Post 5157072)

My junk was not built to run Normally Aspirated. My motor was not a good combo. I wanted to upgrade cylinder heads and I knew I wasn't gonna keep the smaller Big Block so I bought way too much head for a 468 so it was a pig on the Motor. I used to run 9.20's at 143 mph N/A with the same short block and a better combo in a 2800lb car that was a little more aero dynamic than the truck. My truck may still not be back together anytime soon. (issues on the home front) But the new motor should run low 9's N/A with the right convertor. I'm know the tight nitrous convertor will slow it down but to be able to spray a 300 to 500 shot it will have to have it.

Originally Posted by Super73 (Post 5157222)

Kevin, I hope you weren't thinking I was bagging on your truck, not at all. Your truck has always impressed me. I used you truck as an example as it is/was lighter than mine, more cubes etc. It's not as easy to go 9's let alone 10's NA in one of these trucks, yet some make it sound like they grow on trees.

Originally Posted by Super73 (Post 5157222)

Kevin, I hope you weren't thinking I was bagging on your truck, not at all. Your truck has always impressed me. I used you truck as an example as it is/was lighter than mine, more cubes etc. It's not as easy to go 9's let alone 10's NA in one of these trucks, yet some make it sound like they grow on trees.