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Originally Posted by dlampe
I am building an engine for my new GT 40 that will be based on a 8.7 deck hieght (between an 351 and a 302 block) that I was planning rev past 7500 rpm. This is a race motor that will spend 90% of its time on the track. This is my delima. I want an original looking car and I really like the webers. However the cam that I have to run with the webers must have a shorter duration to control the overlap. Webers don't like overlap. Is it true that the webers will sufficate a high reving motor? Will the old holley/victor intake combo outperform the webers? My car runs awesome with the webers right now but it is a HD roller that is all done at 6500.
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Tested back to back 331cu
Weber outdid holley through midrange but overtake by holley at top
Results Holley left column:
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Engine specs:
stroke 3.250,5.400 rod lenght,crower ultralight crank 11.0 CR
Head:Victor JR 301.5/200.5 @.600,Victor Jr manifold
Buddy Rawls flat tappet cam:.592/.544,262/264 @.50
Holley Weber carbs
Tq Hp Tq Hp
4000 338 257 382 291
4400 371 311 400 335
4800 398 364 449 411
5200 411 407 441 436
5600 413 440 438 467
6000 412 470 434 496
6400 400 488 422 515
6800 401 519 399 517
7000 390 534 386 514