I was going to go with the Hooker Super Comps (2055s) but now I can get a set of the SLPs for cheaper, and there the best header out there. Im just wondering if they would be allright for a 305 TPI. Has anyone used the SLPs with a 305 TPI. Also will there be any clearance problems with the SLP Y Pipe with Hotchkis SFCs. Thanks guys.

I wouldn't get them. Too big in my opinion, besides I dont agree with the SLP's being the best. I would stick with the hookers.

I'd stick with 1 5/8" SLPs for a 305, esp if its TPI.

I have the SLP 1.75 headers on a 305. I do not buy into all the 1.75 is too big for a 305. Untill someone takes a 305 with 1.75 headers and drops back to a 1 5/8 header and proves a gain I will not be convenced. I noticed a nice SOTP gain over the stock manifolds/y pipe. I am very pleased with the SLP headers and I would buy them if I had to do it all over again.
I would not say that the SLP'a are the best only because I have not owned ever header offered for a thirdgen. As far as I know SLP is the only header offered in SS. I guess that might be important if you wanted the header to last for a long time. I also sent my SLP's off to Jet Hot for coating. Overkill, yes but I dont like the "rusty header" look.

I posted this about 2 weeks ago. 87 B4Z told me that he saw 3/10th's and 3mph at the track. the only mods at that time were the headers and cat back.

When I'm getting headers for my 305 they will be 1 3/4.

^yep

You will definitely see a gain seeing how crappy the stock manifolds are, but that kinda makes you wonder what he would have seen with 1 5/8 headers. Thats not all that really big of a gain considering he did the entire exhaust at the same time(headers and catback).

I gained 4/10th at the track from after installing SLP 1 5/8" headers. There was an article in CHP awhile back and they did some dyno testing on a 350 and found that the 1 5/8" worked better the 1 3/4" on the 350. I'm not sure what the difference would between the 2 would be on a 305.

Could you scan and post that article for us?

Thanks guys.... Keep the posts flowin, the more opinions the better.

no, at the time i had a flowmaster cat back and ran a 15.5@87mph, added the SLP 1 3/4 headers and y-pipe and got a 15.2@90.

ok, well I misunderstood you, sorry. Either way you go, any header will be better than the stock manifolds, but I believe the 1 5/8 are better suited for any engine making less than 400 hp, 350 or 305.

I'm running SLP 1-3/4 headers and exhaust on a stock LB9. I won't deny that it would make a bit more power with the smaller primaries. I'm sure it would. Did I lose anything? Not that I can tell. Gain? Who knows, never ran it before the headers and exhaust. Even if they are overkill, hey, I've got plans. If the price is right...

Mike,

did you feel any SOTP difference wth them?

Robert

Sorry, I don't have the magazine anymore. It's been almost 2 years, I think, since the article came out. Sorry.

I'm sure I did, but we all know how reliable the butt dyno is. Could be just cause it looked and sounded so much better. I wish I had run the car before the exhaust work so I'd have a good comparison. Should have G-teched it beforehand at least.