Organized Drag Racing and AutocrossDrag racing and autocross discussions and questions. Techniques, tips, suggestions, and "what will I run?" questions.
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I like to think it will go mid 12s no problem maybe even high 11s? I don't know. I'm a bad driver, and I don't like to talk my car up much. It's only as good as the driver in it.
Problem with those times is the amount of power it takes and the traction it requires. Once you step up to full slicks things start to break.
We crunched the T5 is my friends TA. Second gear is the first to go.
In my case using an automatic it's a little easier on drive train parts but I'm wondering how long my stock u-joints will last.
I can't imagine what it's like to launch with a 400's torque and manual trans!
ok so the final assembly will be voodoo cam (469, 480) lift, performer intake, edelbrock 650 carb, hooker headers, flowmaster, cat delete, 416 heads with 3 angle valve job, portedd and polished and gasket matched, with the lunati springs. tranny is stock t-5 w/ zoom hi perf clutch, and rear is also stock. what do you think the numbers will be in the 1/4 mile? any guestimations on hp too? i was thinking maybe 320, 330 at the flywheel???
that seems reasonable. i'd lean more towards almost 350 crank hp depending on the port job to the heads. it may like a performer rpm manifold tho.
depends on the weight and setup of your car, but if you get it to launch hard on sticky tires and bang the gears, i think you will have possible 12's in good weather. most summer days that will be 13's all day long
Can't you really mess up porting heads? I thought it's not just easy that any joe shmo can do in his spare time. I heard a lot of times you end up hindering performance if not done right. Or have I been hearing wrong?
it's really pretty easy, but you are right about screwing them up, some people get carried away and hit a galley then the head is junk... all porting is is smoothing out all the ruff bumps and stuff... some people think its too take material out so everything is larger, thats where you get problems... if you know what your doing it should be simple. High 12's would be great... im probably gonna get pretty nice street tires, maybe radials, but im sure traction will be my biggest problem...
ok so the final assembly will be voodoo cam (469, 480) lift, performer intake, edelbrock 650 carb, hooker headers, flowmaster, cat delete, 416 heads with 3 angle valve job, portedd and polished and gasket matched, with the lunati springs. tranny is stock t-5 w/ zoom hi perf clutch, and rear is also stock. what do you think the numbers will be in the 1/4 mile? any guestimations on hp too? i was thinking maybe 320, 330 at the flywheel???
With my combo I'm optimistic that I'm making 350-375hp at the flywheel. Works out to about 300rwhp. That's with vortec heads and a good three angle valve job (which apparently, is the best improvement for your dollar with these heads and they'll still outflow mildly ported 416's). My time slips seem to support that too. 3600lbs/13.4sec/102mph/3.73 gear with 2500 stall.
12's are a long way off.
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Brody...if you want further info on porting those 416's, get David Vizards book " Max Performance Chevy Small Blocks on a Budget". Best 25 bucks you'll ever spend.
Last edited by skinny z; 01-11-2008 at 03:25 PM.
Reason: Automerged Doublepost
ok so the final assembly will be voodoo cam (469, 480) lift, performer intake, edelbrock 650 carb, hooker headers, flowmaster, cat delete, 416 heads with 3 angle valve job, portedd and polished and gasket matched, with the lunati springs. tranny is stock t-5 w/ zoom hi perf clutch, and rear is also stock. what do you think the numbers will be in the 1/4 mile? any guestimations on hp too? i was thinking maybe 320, 330 at the flywheel???
14014416...80-86...305..........1.84"/1.5" valves, 58cc chambers.
Those numbers are from the Mortec website. Watch your CR with 58cc chambers.
Anything more than 10:1 will be difficult to manage. Particularly with an ineffecient chamber like the 416's.
That's a relatively short cam (262/268 adv duration) so you'll build a ton of compression pressure if the CR is too high.
i will say we went 11.80's @ 115 with a buddies bolt-on LT1 car. it was making right around 300rwhp and weighed 3050 i think minus driver. manual trans, launching pretty hard on slicks.
i will say we went 11.80's @ 115 with a buddies bolt-on LT1 car. it was making right around 300rwhp and weighed 3050 i think minus driver. manual trans, launching pretty hard on slicks.
What did you do to get the weight down to 3050lbs? Thats almost 700lbs lighter than my 86.
Last edited by skinny z; 01-13-2008 at 05:50 PM.
Reason: Automerged Doublepost
stil control the timing tho to a conservative level. 
