Solid Roller 396 Dyno Guesses
01-30-2009, 06:15 PM
#41
Usually due to a cam thats too small, wrong cam(lack of cylinder pressure) or heads/intake that are too small for a certain cubic inch engine. This only applies to normally aspirated combos in general but if you look at dyno sheets of a real efficient combo, NA or not it will always make more HP than TQ. Past 5250 rpm of course.
If my car had a six speed it would probably make 520/530 rwhp and 460 tq, thats just a guess.
The only dyno I have it makes locked 463/431(peaks) but that was with 2 wounded pistons, now it prolly makes 475/440 locked.
01-30-2009, 10:53 PM
#45
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Yeah fatboy is definitely on the right track..... a good efficient motor will always make more hp.... my car on motor made 485 RWHP thru a TH400, big 4000 stall.....
The swap from a T56 to a TH400 with no other changes was about 50hp lost from the rear wheels... i had dynoed 422ish with a T56 with my old 355..... changed nothing but the tranny and car had 375 RWHP.... but car was much faster in the 1/4....
So an NA LT1 like mine or fatboy's will make 525ish RWHP with a manual.....
The swap from a T56 to a TH400 with no other changes was about 50hp lost from the rear wheels... i had dynoed 422ish with a T56 with my old 355..... changed nothing but the tranny and car had 375 RWHP.... but car was much faster in the 1/4....
So an NA LT1 like mine or fatboy's will make 525ish RWHP with a manual.....
01-31-2009, 09:10 AM
#46
Yeah fatboy is definitely on the right track..... a good efficient motor will always make more hp.... my car on motor made 485 RWHP thru a TH400, big 4000 stall.....
The swap from a T56 to a TH400 with no other changes was about 50hp lost from the rear wheels... i had dynoed 422ish with a T56 with my old 355..... changed nothing but the tranny and car had 375 RWHP.... but car was much faster in the 1/4....
So an NA LT1 like mine or fatboy's will make 525ish RWHP with a manual.....
The swap from a T56 to a TH400 with no other changes was about 50hp lost from the rear wheels... i had dynoed 422ish with a T56 with my old 355..... changed nothing but the tranny and car had 375 RWHP.... but car was much faster in the 1/4....
So an NA LT1 like mine or fatboy's will make 525ish RWHP with a manual.....
01-31-2009, 08:32 PM
#47
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Jason I thought you put down more than that on motor? Mine made 522rwhp N/A thru a TH400, 9", and 4400 stall..........I thought you made about the same
01-31-2009, 09:15 PM
#48
original pump gas #'s.... I kept my race gas tune #'s on the low low cause of some races i had lined up........ not a secret anymore tho... Made 515 NA with 110 octane race gas.... My cam is a bit smaller than your IIRC.... 248/260 to your 260+ no???? My cam is lazy on motor but rips on spray.... 114.5 lobe sep....
02-02-2009, 11:10 AM
#49
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Oh I see. I thought I remember we where close in n/a power. Mine was dynoed on 93 octane pumpgas n/a but 116 octane on the juice
i woulda blown my **** up on 91 octane pump gas..... it's horrible gas out here cuz of all the hippies...
02-05-2009, 12:05 AM
#53
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Mustang dyno it put down 430rwhp at 6800rpm and 390ftlbs of torque w/ a cutout open just before the axle. Not sure what that equates to in Dynojet language. From what I've been told the dyno I use reads lower compared to the Dynojets around town. Allegedly it has varied up to 30hp on others who've compared so, whatever.
I wouldn't use my engine as a reference since the heads I am using are ported LT4 castings that were designed to run in a 383 with the LPE 211/219 cam. They do alright for what they are, but I'm confident with a 220cc casting I'd see more power.
I wouldn't use my engine as a reference since the heads I am using are ported LT4 castings that were designed to run in a 383 with the LPE 211/219 cam. They do alright for what they are, but I'm confident with a 220cc casting I'd see more power.
