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#1
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Hi - My 69 Chevelle has manifolds and was thinking of getting her to the track BUT.... was interested to see what folks are running ET / MPH wise with stock or ported exhaust manifolds... anyone?
On a side note, my car looks like a stock 396/350 hp car but dyno'd 450hp/530 tq with cast iron GM intake & a Qjet (albeit with dyno headers)... |
#2
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69 300 Deluxe Post Sedan Frost Green 69 SS396 300 Deluxe Post Sedan Lemans Blue SOLD 70 Buick Skylark Post Sedan Gulfstream Blue 70 Buick Skylark Post Sedan Burnished Saddle http://m.youtube.com/watch?v=PM3DE8qI2NY https://m.youtube.com/watch?v=Yn4xEmGypUw |
#3
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Yeah I know but asked for some advice over there but didn't get any sort of response....
That said, I only want to run low, low 12s... If I could do that with unported manifolds it'd be a bonus. *Spoke to Greg Gessler and he has zero room to accomodate any further manifolds for porting due to time.... |
#4
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i watched a stock ZL1 on the dyno it made 430 hp with manifolds we tried headers and it was a hole differant animal on the first pull it made 518 hp.i had my manifolds for my car ported by the vorteck pro.
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69RS Z/28 first cowl hood car built 12C 69RS Z/28 X33 RED/RED 69RS Z/28 VE3 -- STRIPE DELETE OIRG PAINT 69 L78 X22 convert survivor VE3 ,POP 70 HEMI CUDA ORIG PAINT 19K MILES 70 LS6 M22 4.10 4k Miles Black time capsule Bill Hunter Yenko |
#5
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Protree, its Vortecpro, get it strait.
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#6
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<span style="font-style: italic">.... was interested to see what folks are running ET / MPH wise with stock or ported exhaust manifolds... anyone?</span>
'70 Chevelle LS6/M22/4.56 pure stock rules: 12.2 @ 108 mph
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Sam... ![]() |
#7
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<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: mockingbird812</div><div class="ubbcode-body"><span style="font-style: italic">.... was interested to see what folks are running ET / MPH wise with stock or ported exhaust manifolds... anyone?</span>
'70 Chevelle LS6/M22/4.56 pure stock rules: 12.2 @ 108 mph </div></div> M22..... yeah! |
#8
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Been racing Pure Stock since '99...car has ran a best of 11.72 @ 118 so far @ 3700+ lbs...L72/400/4.56 Yenko Camaro.
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#9
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<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Chevy454</div><div class="ubbcode-body">Been racing Pure Stock since '99...car has ran a best of 11.72 @ 118 so far @ 3700+ lbs...L72/400/4.56 Yenko Camaro. </div></div>
Thats a real good mph for manifolds..... Are they untouched or extrude honed or ported? |
#10
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Untouched, other than a shot of "Cast Blast" spray paint...
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