stock 69 small block 1/4 E.T.???
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stock 69 small block 1/4 E.T.???
What did a stock 69 w/ the 300hp/380ftlbs 350 run in the quarter mile? I immediatly put headers, performer intake and crane 270H cam in before i even drove the car. Also, as i havent had the car to the track yet any estimated times for included mods?
Burning Brakes
Joined: Jul 2001
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From: Ajax Ontario
Re: stock 69 small block 1/4 E.T.??? (jonvolk)
suggest you check out Superfast80's excellent website. Probably won't find your exact combination road tested, but you'll find some articles that will guide you in the right direction. In fact, I bet he replies to this post with a thread to link you. His site is awesome!!
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From: Forked River NJ
Re: stock 69 small block 1/4 E.T.??? (jonvolk)
I would estimate low to mid 14s at about 98 to 100. You have a pretty steep gear with 4.11 so that will help. Traction is a key to low ETs. I thought you already had the mods done. I would suspect high 14s to low 15s without mods. I think Juliets 350 300 horse did this when she ran her car
[Modified by Gordonm, 10:18 AM 12/24/2001]
[Modified by Gordonm, 10:18 AM 12/24/2001]
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Re: stock 69 small block 1/4 E.T.??? (Gordonm)
ive got 3927188 castings on there now which seem to be 76cc small valved heads...i dont think these are the stock heads for are they? any input on whether they are and if theyre not what did the base 350 come with?
Safety Car
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From: PA
Re: stock 69 small block 1/4 E.T.???
ive got 3927188 castings on there now which seem to be 76cc small valved heads...i dont think these are the stock heads for are they? any input on whether they are and if theyre not what did the base 350 come with?
Your 300hp (ZQ3) engine would be the small valve variety.
The ZQ3 engine in the article posted on SuperFast's website is backed by a 3 speed manual transmission, which is about the worst performance setup you'd ever want. Juliet's 1970 350/300 is a VERY stock car that has most of the available options including A/C. She has run a 15.2 with a THM 400 and a 3.08 rear axle ratio. I'd expect a car with fewer options and a higher (numerical) rear axle ratio to be quicker.
Regards,
[Modified by Rowdy Rat, 9:45 AM 12/24/2001]
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From: Middletown Connecticut
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Re: stock 69 small block 1/4 E.T.??? (jonvolk)
hey john, popeye told me he put 2.02/1.60 heads on the car before he sold it to ya. . . but not positive on that one.. my 350 had 64cc 1.94/1.50 heads on them, that would be my guess as to what you have on there if popeye didnt put those other heads on.
Burning Brakes
Joined: Jul 2001
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From: Ajax Ontario
Re: stock 69 small block 1/4 E.T.??? (autoxc3lt1)
Drifting
Joined: Oct 2001
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From: Westampton NJ
Re: stock 69 small block 1/4 E.T.??? (jonvolk)
Unless the intake valves were unshrouded when they upgraded to the 2.02/1.60 from the 1.94/1.50 valves, the "larger" heads actually flow less. That problem was solved on the LT-1 heads (1970).
They put in screw in studs, guide plates, ground out the combustion chamber to unshroud the intake valve, and installed 2.02/1.60 to get more flow.
I'd pull them, and if they're 1.94/1.50 leave them. If they're 2.02/1.60, get them flow benched to check flow...if it seems low, there may be some chamber work in store.
AFAIK, I have -186 heads, late '69 casting. What I know of them so far is that the valve seats have been replaced, there are dual springs on the valves, regular steel rockers, pressed in studs (no guideplates), and TRW hardened chromemoly pushrods. I'm probably going to switch to roller rockers soon. It seems to be an inexpensive way to get some extra oomph. :smash:
They put in screw in studs, guide plates, ground out the combustion chamber to unshroud the intake valve, and installed 2.02/1.60 to get more flow.
I'd pull them, and if they're 1.94/1.50 leave them. If they're 2.02/1.60, get them flow benched to check flow...if it seems low, there may be some chamber work in store.
AFAIK, I have -186 heads, late '69 casting. What I know of them so far is that the valve seats have been replaced, there are dual springs on the valves, regular steel rockers, pressed in studs (no guideplates), and TRW hardened chromemoly pushrods. I'm probably going to switch to roller rockers soon. It seems to be an inexpensive way to get some extra oomph. :smash: