Quote:
Originally Posted by 1chance
Ok, i put chip back to where it was, and it ran alot better, Mid 700 in 1st/2nd, and 750 at trap. I add 2points in timing in 1st/2nd that lean it more. Now i cant build boost to 5psi without spinning tires, but the car has great hydroboost brakes. It seems to like T/C lockup, but i got to figure how to make it lock without lifting up on brake pedal, if i adjt switch on pedal to come on, the car dont drive good in normal driving. Do i need better tires, i have 26 BFG. The car is still only getting 107-112mph, with a 60ft of 1.8-2.0, how much boost do you need to leave with to get better Mph? Oh chip is made for 22/20 timing-20-24boost, but i bump it 2point in 1st/2nd.
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Your launch boost has absolutely no effect on trap speed....launch boost has everything to do with 60' time and ET.... the trap speed is the HP indicator.... the ET shows how well you made use of your HP/TQ....
The torque converter won't L/U in 1st.... it is physically and hydraullically impossible..... you probably only need 5-6 lb launch to get sub 1.8 60' times....8-10 lb launch should probably net 1.6X 60' times....
As far as tires.. I personally hate BFG's.... I really like MT drag radials....and their ET streets... M&H racemasters hooked well for me as well...
On a decent track at your power level... some good drag radials should easily go 1.6x 60' with little to no suspension work..... so yes... I think you might could use better tires...
What boost are you at now?
What timing now?
What launch boost?
Depending on thos numbers... you might can increase boost.... or increase timing (but not both at the same time).... to get the trap speed up....
Also... what converter did you say you have?
What octane fuel?
What intercooler?
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1987 Buick GN
Currently getting freshened up....
Old Parts: 60# injectors, 3" TH DP with test pipe and hooker cat back, Walbro 340 pump, Razor's Alky, TT Chip, 3-1/2" MAF pipe with Big Mouth CA Kit and LS1 MAF, Translator.... yada yada
New parts: Ported heads with stainless valves, RJC FMIC, T&D 1.65 roller rockers, Comp XR2 Hydraulic Roller 210/215@.050 .549/.549 (with 1.65 rockers), champion ported intake, Hemco stock appearing doghouse, PT70 P-trim turbo with H comp. housing, N/A109 block bored .030 over with head studs, main studs #2 and #3 billet main caps, cometics, TRW forged .030 over slugs with hastings moly rings.
New times soon.
(1/8) 8.002 @ 86 mph 12.650 @ 106 mph with a 1.71 60' time with the stock turbo/dutt neck intercooler (best mph was 107.69 mph)
Last edited by Blazer406 : June 9th, 2008 at 05:18 PM.
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