The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - The Quest For Fifteens: The Saga Continues

Project1970 · 04-27-2002, 11:32 AM

alexmart1: Nope, still running manifolds...yeah, I know...an intake is actually right about third on the list at the moment. First is the 700R4, since no matter what else I do to this thing, I've got to get those RPMs down on the freeway so I can drive it to UofA and back without winding the engine at 4000RPM the entire way... Exhaust is second, because that could be as cheap as an H-pipe and I want to quiet the idle down. Rears are 275/60-15 Radial T/As.

67BlackSheep: Hehe...I wouldn't mind going to a floor shifter and two seats...that one will probably have to wait, though. Heh, I know what it'll take to get me into the 14s...a new crate engine. =P It's actually pretty good off of the line, I just give the tires a quick scratch (don't use the waterbox) before I go in and powerbrake it at 1100RPM. 2.3 second 60' times are darn good for a truck with an open rear if I do say so myself, and the track was a bit slick; I had both of the imports I whooped (woo!!!) from the 60' mark, and even a '72 Camaro until just before the 330' mark.

Stroker: See above for lack of traction issues, heh. I've been thinking about 1.6 rockers, to help it breathe a bit better. Speaking of that, anyone have any ideas as to why this thing just seems to run flat much past 4800RPM? What would be the biggest bottleneck? Original intake, heads, exhaust manifolds... I could probably ice down the intake...last night, it wasn't much of an issue, an unusually cool night for April in Phoenix...I think that's part of the reason my slowest run was still faster than my previous fastest, I never had any "hot" runs. Already have a 160 stat to keep it cooler in the summer, but I can't do the 5w30; it leaks/burns enough at 20w50!

Thanks for the replies, guys; I really want to get it into the fifteens this year but I'm not sure if it'll happen until after summer, at least not with the little tweaks I've been doing. (Almost scary that I've cut off nearly 2 seconds with mostly tweaks!) Last night was probably the final cool Friday night we'll have around here for a while.

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Project 1970 - soon to be seen at http://milhouse.treylis.org:81/

04-27-2002, 11:32 AM	#7
Project1970 14.1 @ 96MPH Join Date: Jul 2001 Location: Mesa, AZ Posts: 2,811	alexmart1: Nope, still running manifolds...yeah, I know...an intake is actually right about third on the list at the moment. First is the 700R4, since no matter what else I do to this thing, I've got to get those RPMs down on the freeway so I can drive it to UofA and back without winding the engine at 4000RPM the entire way... Exhaust is second, because that could be as cheap as an H-pipe and I want to quiet the idle down. Rears are 275/60-15 Radial T/As. 67BlackSheep: Hehe...I wouldn't mind going to a floor shifter and two seats...that one will probably have to wait, though. Heh, I know what it'll take to get me into the 14s...a new crate engine. =P It's actually pretty good off of the line, I just give the tires a quick scratch (don't use the waterbox) before I go in and powerbrake it at 1100RPM. 2.3 second 60' times are darn good for a truck with an open rear if I do say so myself, and the track was a bit slick; I had both of the imports I whooped (woo!!!) from the 60' mark, and even a '72 Camaro until just before the 330' mark. Stroker: See above for lack of traction issues, heh. I've been thinking about 1.6 rockers, to help it breathe a bit better. Speaking of that, anyone have any ideas as to why this thing just seems to run flat much past 4800RPM? What would be the biggest bottleneck? Original intake, heads, exhaust manifolds... I could probably ice down the intake...last night, it wasn't much of an issue, an unusually cool night for April in Phoenix...I think that's part of the reason my slowest run was still faster than my previous fastest, I never had any "hot" runs. Already have a 160 stat to keep it cooler in the summer, but I can't do the 5w30; it leaks/burns enough at 20w50! Thanks for the replies, guys; I really want to get it into the fifteens this year but I'm not sure if it'll happen until after summer, at least not with the little tweaks I've been doing. (Almost scary that I've cut off nearly 2 seconds with mostly tweaks!) Last night was probably the final cool Friday night we'll have around here for a while. ------------------ Project 1970 - soon to be seen at http://milhouse.treylis.org:81/ __________________ Project1970 - LS1 Swap Complete!