1 5 8 vs 1 3 4 headers Should I get 1 5 8 s or 1 3 4 LTs if i go with LTs and either BBK or Mac would be fine I know bbk offers ceramics And are you saying that Fox LTs on an SN95 will fit
If your engine was designed to run often in the 4000 rpm range then I d go with the larger header If it sees 3500 then I d probably sell the larger headers and I finally got around to swapping out the old Hooker Comp 1 5 8 headers for some Super Comp 1 3 4 The result about 1 mph gain in the 1 4 mile That s right it
1 5 8 vs 1 3 4 headers
1 5 8 vs 1 3 4 headers
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Headers SBC 1 3 4 Silver Ceramic RV Parts Express Specialty RV
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Buy Mophorn Exhaust Header Set 1 3 4 Exhaust Turbo Headers Stainless
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Most of our techs agree that a street application 350 will benefit well from a header with 1 1 2 to 1 5 8 diameter primary tubes and 2 1 2 or 3 inch collectors What this size does is creates a faster removal We swapped out the 1 5 8 inch headers for 1 inch long tube headers and found additional low end power from 3 000 through 3 800 rpm with increases of roughly 4 to 6
1 3 4 primary and 3 exhaust is a recipe for drone lower exhaust resonance slower velocity The smaller exhaust will scavenge the exhaust more Consider these five points 5 Things to Consider When Buying Exhaust Headers 1 Header Size Bigger Isn t Always Better One of the main considerations in choosing a set of headers is the
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Add a supercharger to the same engine and a 1 5 8 to 1 3 4 header is better suited An engine making 400 450 horsepower on a racing application that spends all its time on a drag strip between 3 500 and I am running a 66 Fastback 347 cid with AFR 205 heads and Hedman 1 5 8 headers AFR suggests using 1 3 4 headers but if there isn t a significant difference in
Just dug up the header shootout in MM FF 4 09 and the 450rwhp motor thy used made more power with 1 5 8 LT s by Kooks and Mac than the 1 3 4 Stainless I have a modified 355 with 10 2 compression moderate roller cam AFR heads and 1 3 4 inch long tube headers I did notice a difference from 1 5 8 inch
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1 5 8 vs 1 3 4 headers - 1 3 4 primary and 3 exhaust is a recipe for drone lower exhaust resonance slower velocity The smaller exhaust will scavenge the exhaust more