Stu Cool

iTrader: (13)

Has anyone tried a set for their swap? I see several companies offer them. Experience? Recommendations? I am looking at this more from a "will it fit" perspective, not so much "will it perform."

thanks

Pat

67pete

I tried the Heddman block huggers and they fit ok...but the workmanship left a lot to be desired. Went and modified they originals to keep that factory look.

Stu Cool

iTrader: (13)

Thanks Pete, What mods did you make to the originals? I am concerned about that huge flange at the outlet, I think it will hit my steering box.

Pat

67pete

With my car, the stock passenger side ran right into the subframe connector at the fire wall. Using the '99 T/A (same as Camaro) manifold, which is a double walled unit, I brought the flange down between the last two cylinders which gave me clearance from the A-arms and the subframe connector.I had even tried the Corvette manifolds, but modifying the stock unit even with the double wall of stainless steel (vs cast iron) looked the better route. Hopefully my welding will hold up!

GTS346

iTrader: (1)

Pete do u have a pic of the originals?

81LS1Camaro

iTrader: (1)

and the modified ones

67pete

Will try and get pictures when I get it out of the car........

GTS346

iTrader: (1)

Are we talking regular SBC block huggers or LS1 block huggers?

Stu Cool

iTrader: (13)

Block Huggers for the LS1 in general applications like a street rod, or... a Studebaker

thanks for any info you can provide

Pat

67pete

According to the "experts" ,including GM, the small block & LS1 are one and the same.............but for those of us who've tried them both, we know different.

Oscar Will

I tried the Covette manifolds, they tuck in pretty close and clear everything on my 1935 Ford

Stu Cool

iTrader: (13)

Thanks, I have a set of the Corvette manifolds and will try them, but I think because they come down in the middle they will hit my cross member. I have just been studying the manifolds on my 5.3 Silverado and they look like they would dump far enough to the rear, without that huge flange that the F Body manifolds have, that they would clear my steering box. Truck manifolds might be the answer. Nice to know I have options.

Pat

67pete

There might be a difference between the regular Corvette manifolds and the Z06 manifolds, as the Z06 manifolds I have dump just rear of the center, which is further back than the block huggers do.

red90cobra

iTrader: (36)

I was like what that on the intake till I looked again and saw it was your intake

GTS346

iTrader: (1)

Oscar what are those pipes made of, mild steel and you just coated them?
What size primary and what size collector do they have?

Also do you have a front shot of the engine and that side header, I just want to see the angle they come out on.

Oscar Will

That was the only place I could find to put an airbox with filter....on top of the intake. It works well, very little intake noise. Those are stock 1997 Corvette "stamped steel" manifolds, I'd say the primaries are about 1 3/4" maybe, the collector is 2 1/2". I ran 2 1/2" all the way with a Spintech x-pipe and 2-in...2-out Spintech muffler. The headers are ceramic coated.