Classic Chevy Small Block & Big Block | Forum profile

L48 Does the l-48 from late 70's use 1.25" retainers and have an installed spring height of 1.75", this seems to be what I get, but can not get a clear answer? Also whats the max spring pressure everyone runs on a flat tappet cam, is 115ish a bit much for small-med cam? Thanks...

try it with out the msd box and see if it goes away

noice

SBC in a 97 trans am What headers?? I have a 97 trans am in the shop putting a carbed sbc with a powerglide making about 600 hp. What brand of headers can I run? they need to be at least 1 7/8. If you have a link please post it all help is appreciated. __________________...

Not sure what the rated hp is, but I'm sure someone will chime in. As for gas mileage its not going to be great, somwhere in the mid teens would be my guess depending on how you drive it. A 350 is a 350, one of the most tried and true engines ever built. What trans does it have?

Just for the sake of completeness, have you looked for the routing diagram decal under the hood?

Not too familiar with the 327, but would you be reusing most of the rotating assembly with both engines? Pretty much going to say LT1 unless you have an all forged 327 which I'm pretty sure didn't come stock.

Basically the same thing that you would do to just drop a normal 350 in, headers, intake, cooling system, and electrical. Depending on your power levels I'd say go th350, less drivetrain power loss.

I'd try basic tune-up stuff before going to the expense of a 305 rebuild only to find it still needs a tune-up. Plugs, wires, cap, rotor, O2 sensor, fuel filter, air filter - those things are easy and cheap compared to a rebuild where parts alone are $300. Besides, makes more sense to find a 350 and rebuild it. I know you said you don't intend to turn it into a monster, but rebuilding a 305...

What are your intentions for the engine? I see you are planning to add a girdle but you haven't said what the application will be. Is this for a truck application i.e., big tired 4x4?