Thread: Sbc Power!!!

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Originally posted by R Pope
Lots of weight in the trunk!

Yeah like a couple FoMoCo 351's

TO: all it takes is money.. Yea you can forget about the FOMOCO 351's id rather not get my tires off the ground than haul around some ford motors.. but thanks for the advice!!

Stroke_this383

Corvette64---Haha! My 351's are good for something, eh?

2 things i'd like to say.

1. Don't do NOS. It's just really costly in the end, sure you spend $1,500 more on a Supercharger, but for one it's ALWAYS there and you don't have to hit a button or remembering filling up a bottle and it's ALOT more stable.

I've got a friend with a 00' (i know i know) neon, and he has it running 12s N/A (auto 3spd..these trannies hold 500hp easy) but he has hit the NOS (75 shot) 3 times...and well..1 time he blew a motor, the 2nd time he ruined his transmission, and the 3rd time..he blew his built NOS ready bottom end. $1,800 later..he's still having problems with the NOS..every time he hits it SOMETHING happens, ran into him at Discount Auto parts one day..and he had a list of codes about 25 long...all came on once he hit his NOS. Just seems bad. lol.

2. The shift kit. My other friend (helped me drop a sbc into my nova) He has a 93 mustang 5.0 with 4.11 gears, a built-up auto trans and a pretty much stock motor (cold air intake is really the only thing) the guy he bought it from built the car..and it shifts SOOOO freakin hard. Just under normal driving, it just slams you back into your seat..i thought his tranny blewup the first time i rode in it. lol. But when it shifts under hard acceleration..whew..heh it really goes.

Dallas
1970 Nova - blew the i6/powerglide, now runnin 83' 305/TH350
1968 Dart 270- 318 block, 273 topend, Factory Working A/C & P/S

NOS I guess is nice if you have the motor built for it but I wouldn't wanna waste my money on it... Junk to me.

eh, i'm still leary with NOS because even with an engine built specifically for that, it's just kinda unstable, but if you can make it work! go for it man. I won't risk it lol..sucks having your only "hot rod/project" also being your daily driver.

Dallas

NITROUS BABY!!!! WHEEWWW
I think im goin to go with the nitrous, a supercharger i just dont have the money for now, dont get me wrong if i had a supercharger it would be the way to go.. but yea not goin to happen.. ill keep yall updated... or how about nitrous and a supercharger??? huh.. crazy dude

Stroker

Nitrous AND a supercharger? LMAO, that's a little overboard don't you think? Supercharger in the end will be cheaper, especially if your motors not build for nitrous then you will be screwing parts up left and right and in the end it will cost you more money. I watched some drag races on TV and they guys were racing with small block Chevy's and a guy with a small block Ford and they said they used to build their engines for nitrous but even their built motors would last only a few events and have tons of problems and now they switched to a supercharger and it's cheaper, more reliable and lasts longer with more power.
Just something to take into consideration. Also if this is a everyday driver or something (I can't remember what you said) then neither is a good idea IMO.

Honestly, I'd stick with a supercharger, sure nitrous is cheap now..$600-800 for the kit...that's $1,200 less than a supercharger. but then you hit the bottle and need a refill $50-$100.....hit it 3 times...$300 or so.. depending on bottle size of course.

Plus, a thrown rod, a cracked piston, a blown headgasket, a fried tranny..this and that and the other..well, you've used nitrous appox 5 times and have spent $3000 getting your car back to the way it WAS.

Supercharger, you get adjustable pulleys..use an 8psi for daily driving, use 12psi at the track. or more. Any changing a pulley is easy..plus you can get a silent or loud s/c. Plus you ALWAYS run your E/T..not just when you got the bottle in and full...so if you pull up to a vette and he wants to race for slips..you can win it and won't be saying "uhh..i would but i'm not properly equipped today" haha.


You could always go with a 638 Merlin Bigblock with 3 superchargers?

I know a guy with a chevy celebrity that's got a big block and 3 superchargers. low 9s consistently. now that's bad ass

If you want to get the tires off the ground cheaply.....Put a high stall convertor in it....3800-4200

Tie the subframe...adjust pinion angle....heck even a stock motor with that much convertor could lift a tire....

Now if you want to lift em and run the numbers....thats a whole nother story....

How are thos mini blowers like the B&M 144 theres one on ebay right now with heads and a carb for 650 bucks... or should it be something like a 6-71..? What kind of compression should you run with a blower..? There is goin to be over 13:1 in the 383 so im sure it will have to be lowered but what is the max you can have before cylinder pressure is too much with a blower?
And i am thinkin about buildin the 638 with 3 superchargers!! RIIIIGGGHHHT!!! lol

Stroker!!

13:1 is way too high, especially for a blower. I don't know what the highest you can have is with one but that is too high. My guess would be 9.5:1 but that is just a guess. I have always wondered this though too so I can't wait to see what some people say here.

8:1 if you want to run any 8-10 LBS of boost, 13:1 is way too much. if you had 9.5:1 you could get away with probably 5 pounds of boost. 13:1 would probably blow the head gaskets when you revved it... or worse.